Career
Cannon"s career began back to the 1950s with roles in shows like Alfred Hitchcock Presents, The Outer Limits and Combat!. On Magnum, Philippine Islands, Cannon was featured as Doctor Ibold, while on Hawaii Five-O, he played Attorney General John Manicote. In recent years, he served as president of the Hawaii chapter of the Screen Actors Guild and its successor group, Screen Actors Guild-American Federation TV and Radio Artists. He was a Professor of Theatre at the University of Hawaii at Manoa and also co-Director of the UH-Manoa Cinematic and Digital Arts program